tuning
n. C / Un. the process of adjusting a musical instrument or a machine so that it works perfectly. You do this to make sure notes sound right or an engine runs smoothly.
n. the adjustment of a system, instrument, or mechanism to achieve a specific pitch, frequency, or optimal performance level. Often refers to the calibration of musical strings or the refinement of mechanical and software parameters.
The piano needs a professional tuning before the concert starts.
After hours of careful engine tuning, the race car finally reached its top speed on the track.
Precise vocal tuning in the studio can correct minor pitch errors without stripping the performance of its natural emotional resonance.
Uncountable when referring to the general process; countable when referring to a specific system of pitch adjustment (e.g., 'an open tuning').